Throttle Position Sensor: Testing and Inspection

THROTTLE POSITION (TP) SENSOR INSPECTION[L3]

NOTE: Perform the following inspection only when directed.

Voltage Inspection
1. Verify that no DTC related to APP sensor has been detected.
- If any DTCs related to APP sensor have been detected, perform the DTC inspection.(See DTC TABLE[L3].) Diagnostic Trouble Code Descriptions
2. Start the engine and warm it up (ECT: more than 80 °C {176 °F}.
3. Turn the ignition switch to ON position (Engine OFF).
4. Verify that the PCM terminal 2AK and 2AL change smoothly while throttle valve is gradually opened.
- If as verified, go to next step.
- If not as verified, perform the "Circuit Open/Short Inspection".
- If there is no open or short circuit. replace the throttle body.

TP Sensor Output Voltage:

5. Verify that the PCM terminal 2AK and 2AL voltages are as shown in the table.
- If voltage is not as following table, perform the "Circuit Open/Short Inspection".
- If there is no open or short circuit, replace the throttle body.

Circuit Open/Short Inspection




1. Disconnect the PCM connector.
2. Inspect the following wiring harnesses for open or short circuit. (Continuity inspection)

Open circuit
- If there is no continuity, there is an open circuit. Repair or replace the wiring harness.
- Throttle body terminal A and PCM terminal 2Ak
- Throttle body terminal B and PCM terminal 2A0
- Throttle body terminal C and PCM terminal 2AL
- Throttle body terminal D and PCM terminal 2AP

Short circuit
- If there is continuity, there is a short circuit. Repair or replace the wiring harness.
- Throttle body terminal A and power supply
- Throttle body terminal A and body GND
- Throttle body terminal B and power supply
- Throttle body terminal B and body GND
- Throttle body terminal C and power supply
- Throttle body terminal C and body GND
- Throttle body terminal D and power supply